how make x and y -axis labels(titles) for histogram of an image?

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somasekar jalari
somasekar jalari 2015-5-2
评论： somasekar jalari 2015-5-4
i execute the following matlab code to display histogram of gray scale image with x-axis and y-axis names but i didnot get names in x-axis and y-axis labels.
k=imhist(image)
xlabel('grayscale range')
ylabel('intensity values range');

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Image Analyst
Image Analyst 2015-5-2
Your code should have worked. Try my boilerplate code snippet:
% Let's compute and display the histogram.
[pixelCount, grayLevels] = imhist(grayImage);
bar(grayLevels, pixelCount); % Plot it as a bar chart.
grid on;
title('Histogram of original image', 'FontSize', fontSize);
xlabel('Gray Level', 'FontSize', fontSize);
ylabel('Pixel Count', 'FontSize', fontSize);
xlim([0 grayLevels(end)]); % Scale x axis manually.

更多回答（1 个）

Ahmet Cecen
Ahmet Cecen 2015-5-2
编辑：Ahmet Cecen 2015-5-2
This sometimes happens to me too. The problem is xlabel sometimes get stuck BEHIND the imhist colorbar at the bottom. To fix it you can use this instead (may need to play around with the values for your liking):
xlabel('grayscale range')
xl = get(gca,'XLabel');
set(xl,'Position',get(xl,'Position') - [0 60000 0])
And Image Analyst's solution would also work because it gets rid of the default bar at the bottom. Take your pick.

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